I'm pretty sure that if the 11b23 did not cause the truck to run poorly and go into limp mode then you don't get or need the correcting flash. My truck had the 11b23 and ran great.

 

Correct, if your truck ran fine with the 11B23 update, you will have no need to get the TSB fix for it.

 

well thanx for the reply ,was'nt lookin frwd to a dealer trip .just filled up 24 gallons /300 miles and just like the meter say's 12.5 mpg ! the holy grail of mpg's is right under me just can't put my hands on it ........yet.

 

Filled today $603.00 151 gallons Diesel $3.99
Bulk tank 125 gallons truck 38 gallons

bad thing tuck still had 1/4 tank

 

Total mileage for that fill up?

 

1,600 miles

 

last nite I filled the tank to the neck and in the morning drove a 216 mile frwy ride [a little backroads ] picked up a 700lb load and came home ,5/8's tank left it took 12 gals to top off this evening . meter said I was 13mpg but calc. says 18 mpg .I am sorta shocked but not to surprised, stayed out of the boost when i could and avg 65-70mph and older guy i met in the store on the trip said"you'd be surprised what these can do if you keep your foot out of it's ***!" he had an 08 cc 4x4 lb .this is with the banks 6 gun set at "econ" ,I did notice it shifted to high gear a little soon a few times it seemed.

 

Meant to take a picture, but forgot. This weekend I drove a little over 300 miles, all but about 3-4 were highway. I had topped it off good before the trip. Running Spartan 300LL. Speed was usually ~70-74mph. Tank was right at half full (or half empty depending on your outlook) at 302 miles. The dash info read 26.1mpg. While I know that isn't close to reality, and I haven't had time to fill it before doing some driving that will severely mess up that mileage, it is probably in the 18mpg range. It's funny to look at the MTE and it says like 600+ when filled up... LOL.

Chris